Said walker



P. HUCKINS P. L. R. WALKER.

APPARATUS P0P DPSIGGATING AND TORRPPYING PARRINAGBOUS SUBSTANGPS.

Patented Mar. 19, V1861.

IHIHHIVIIIAIHHHHHT l T Af i m if L L L y @d QZ onrrn STATES PATENT OFFTCE.

F. HUCKINS AND E. C. R. WALKER, OF ROXBURY, BIASSAGHUSETTS; SAID WALKER ASSIGNOR TO SAID HUCKINS.

APPARATUS FOR DESICCATING AND TORREFYING FARINACEOUS SUBSTANCES.

Specification of Letters Patent No. 31,763, dated March 19,. 18 61.

To allwhom it may concern:

Be it known that we, FRANCIS HUoxINs and E. G. R. VALKER, of Roxbury, in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvement in Desiccating and Torrefying Farinaceous and other Substances; and we dohereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in

whichd i Figure l, is a transverse vertical section of a means employed for carrying out our invention m. m, Fig. 2, indicates the plane of section. Fig. 2, is a longitudinal vertical section of the same taken in the line y. y. Fig. 1;

Similar letters of reference indicate corresponding parts in the two figures.

To enable those skilled in the art to fully understand and construct our invention we will proceed to describe it.

A represents a semi-cylindrical vessel of cast metal and set directly over a furnace B, which may be of masonry. This furnace is indicated in red in both figures. Within the vessel A, there is fitted or placed a semicylindrical retort C, 'which is smaller than the vessel A, so as to leave a space (L, between them at all points. rlvhe retort C, is suspended within the vessel A, by flanches b which project from the ends and from both sides of the retort at its upper part, the flanches resting in rabbets c, in the upper edges of the vessel Al On the upper part of the retort C, there is placed a semi-cylindrical top or cover D, which is perforated or has small tubes d ittedin it to allow the escape of vapor from the retort.

The edges of the flanches b, Z) are grooved longitudinally or each has a V-shaped recess e, extending its whole length. `The form of these grooves or recesses is shown clearly in Fig. l, and they admit of the retort C, being tilted at either side, the groove e, at one side catching on the upper edge of the rabbet c of the vessel A at the upper side as the retort is tilted. This will be fully understood by referring to Fig. l, in which the retort is shown in a tilted state in This tilting of the retort enables the contents to be removed therefrom with great on the upper part of the retortand allowed ,to rotate freely in its bearings.

On this shaft E, there are placed a series of arms F, in each of which a rod f, is litted, said rods having collars g, and spiral springs it on them. The springs 7L, have a tendency to keep the rods f, forced outward against stops z', at the ends of the arms F. At the ends of the rods f, there are placed Scrapers j, one on each end, the scrapers being simply bars of V-shape in their transverse section, and made tobear against the inner surface of the retort C, as they pass over it, by the springs 71,. The arms F, project from opposite sides of the shaft E, as shown clearly in Fig. 2.

On one end of the shaft E, there is placed a pinion k, into which a toothed segment Z gears. This segment is attached to the front end of the vessel A and it has a vibrating movement given it by' a crank m, and connecting rod n. On the shaft E, near each end of it, there is placed an arm or scraper 0. These Scrapers work over the surfaces of the heads of the retort.

The operation is as follows The vessel A, is supplied with animal oil p, so that the retort C, will be in contact lwith it all around. The substance Gr to be desiccated or torreiied is placed in the retort and heated through the medium of the oil 79, the latter being heated by the furnace B. Oil as is well' known boils at a temperature of 550 and consequently the substance in C. may be subjected to a gentle or extreme degree of heat as circumstances may require and the heat to which the substance is subjected will be constant or uniform, and not subject to the quick uct-uations that it would be were the retort C, over the fire chamber and heated directly from the fire. The substance G is stirred while being heated and having its moisture expelled from it, by rotating the crank m, whichV by means of the rod n, communicates a vibratory or oscillating movement to the segment Z, which in connection .with the pinion lc, on shaft E, give a reciprocating rotary movement to the shaft E, the latter making a complete revolution in one direction and then in the other. By this arrangement it Will be seen that the substance Gr, may be stirred While Within the retort C, and consequently Without retarding in the least the desiccating or torrefying process.

This invention has been practically tested in the manufacture of British gum and has been found to eeet a great saving not only in fuel but also in labor and stock While the quality of the manufactured article has been good. The stock or substance G, being prevented from burning and from being unduly heated.

Having thus described our invention, What We claim as new and desire to secure by Letl5 ters Patent, is

The employment in connection With the arms F and retort C of the self adjusting or spring Scrapers j, constructed and operating as herein shown and described.

FRANCIS HUCKINS. E. C. R. WALKER.

Witnesses:

JOSEPH W. TUCKER,Y GEORGE F. SEAVER. 

